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390 Surface Prep Machine
Operating Manual
October 31, 2005
Read before use and keep safe
Table of Contents
1.0 Technical Data Page 2
2.0 Safety Page 2
3.0 Safety Instructions Page 2
4.0 Maintenance Page 4
5.0 Use Page 4
6.0 Trouble Shooting Page 6
7.0 Schematics Page 7
6686 Merchandise Way Diamond Springs, Ca 95619
(800) 624-2408 (530) 626-9386 Fax (530) 626-5144
www.sineqco.com
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1.0 Technical data/technical description
Power supply 110V AC
Power consumption 1300W
No-load speed 154 / min.
Sound pressure level 54 dB(A)
Sound energy level 67 dB(A)
Hand/Arm-Vibration 4.5 m/s2
Weight 97 lbs.
Includes: 390 Grinding Machine, Tool Kit,
Operation Manual
2.0 Safety
The Sinclair 390 Surface Prep is state of the art designed and meets all standard
safety requirements.
3.0 Safety Instructions
Disconnect the power supply before any maintenance is carried out.
Use only recommended mounting discs and brushes. The mounting discs must have a
plain surface.
Use only genuine Sinclair discs and brushes. Other parts could affect the safety of the
machine.
Maintenance should be undertaken only by qualified personnel. Use only genuine
Sinclair spare parts. Always remove the disc and brushes before transporting the
machine. Use only appropriate detergent liquids.
Check the power cord and the plug before starting. Both of them must be in
perfect condition, the insulation must not be damaged.
CAUTION!!! Always wear ear and eye protectors!
CAUTION!!!
Using this machine without ear and eye protectors may jeopardize or harm your
health. It may harm especially your ears and increase the risk of an accident.
PLEASE READ DETAILED SAFETY INSTRUCTIONS ON COLORED
SHEET BEFORE USING MACHINE!
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3.1 Introduction
This operating manual should be used to get the most benefit from your 390 Surface
Prep machine. Following these instructions will both extend the life of your machine
and reduce repair costs.
Please make sure you are fully familiar with the operating instructions before using
this machine.
3.2 Danger while working with the machine
The 390 Surface Prep is designed to the highest technical standards.
Incorrect use can be dangerous!
Use this machine only
- As instructed in this operating manual
- With the machine in perfect working order
Disturbances that could impair safety have to be eliminated at once.
3.3 Restriction of use
The 390 Surface Prep Machine is exclusively for wet cleaning and polishing of
resilient and textile floor coverings and for grinding pavement and leveling
compounds in dry environments. It should not be used for any other purpose. Sinclair
is not responsible for any damage or loss caused by incorrect use.
3.4 Genuine Spare Parts
Spare parts and accessories are manufactured uniquely for the 390 Surface Prep
Machine. It must be emphasized that parts obtained from unauthorized sources must
not be used.
Sinclair Equipment Company cannot be held responsible for the performance of
or any damage arising from the use of machines in which genuine spare parts have
not been used.
This is particularly important with mounting discs, disc and brushes.
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4.0 Maintenance
The 390 Surface Prep machine is virtually maintenance free.
The roller bearing and gearbox need not to be lubricated.
Mounting and changing the paper bags of the vacuum unit
The vacuum unit can be used with paper bags or with the enclosed textile bag.
- release and pull the cover of the vacuum unit upwards
- insert paper bag
- remount the cover
- mount the vacuum ring from the lower side of the machine
- connect the vacuum ring with the vacuum unit with the tubes
- connect the power cord of the vacuum unit with the grinding machine
5.0 Use
Getting started
The 390 Surface Prep is shipped in two separate boxes. Mount the handle with four
screws, safety washers and nuts to the machine (Pos. 16).
Connect the power cord of the handle with the machine.
Mount the handle with the cable entry (5) backwards (towards the user).
Otherwise the machine will not operate.
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Assembly of mounting discs, pads and brushes
Lay the machine down on the handle. Thus the support of the discs is accessible. Put
the mounting disc on the actuation and lock it by turning counter-clockwise.
Assembly of the vacuum unit
Assemble the vacuum unit with two supports to the handle.
- insert lower connector into the plastic mounting
- lock the upper connector by shifting the upper plastic mounting down
The upper plastic mounting can be shifted by loosening the screws.
- Mount discs and brushes as described in item
- Connect the vacuum ring and the vacuum with the tubes
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- Put the handle (2) in working position with the big, right lever (1). We
recommend positioning the handgrip in the height of the
user’s hip.
- Lift the handle slightly, to make sure the machine stands horizontally.
- Move the left or right safety lock (3) located onto the grip inwards.
- Switch on the machine with the respective lever (4).
After switching on the machine, the handle will move shortly to the right.
The direction in which the machine moves, is controlled by lifting or lowering the
grip. The more you lift or lower the grip, the faster the machine runs to the
corresponding direction.
- lifting the grip: machine runs to the right
- lowering the grip: Machine runs to the left
Lever (4) can only be actuated, if the handle is not in vertical position. This is a
safety feature! The user cannot control the machine with vertical handle.
If you feel unsafe or cannot control the machine just release lever (4). The machine
will stop at once. If you have carried out some training, you will be able to operate
the machine with one hand.
Always remove discs or brushes after work. Remove also the cleaning tank, if one
has been used. Always disconnect the power cord after work or when leaving the
machine.
Operation with vacuum cleaner
Note: the vacuum cleaner cannot – on technical grounds – remove the grinding dust
from under the discs. It will always remove the fine dust. To clean the floor, use an
industrial cylinder vacuum cleaner.
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6.0 Trouble shooting
Trouble Eventual Elimination
Machine does not start Power supply disconnected
Have machine repaired by a
qualified electrician,
Blown Fuse
resp. change parts
Defective cable or plug
Switch-on lever cannot be
actuated
Assembly of handle wrong,
described in section 5.0
Safety lever can only be
actuated, if handle not
vertical
Assemble handle correctly
Lower the handle of the
machine
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7.0 Schematics
MACHINE
Schematic # Part # Description
1 021625 Top Cover + Motor Housing
2 021626 Base Link
3 021627 Rubber Washer
4 021629 Fastening Screw for Gear
5 021628 Balancing Weight
6 021629 Fastening Screw for Weight
7 021630 Fastening Screw for Housing
8 017284 Screw 4.8 x 13
9 017283 Axle Retainer
10 021631 Wheel Axle
11 018080 Washer
12 016928 Transport Wheel
13 014849 Circlip Ring
14 014830 Washer
15 021633 Wheel Cover
16 014761 Screw
17 015478 Screw Nut for Fan Wheel
18 015481 Washer
19 015480 Fan Wheel
20 015481 Screw M4 x 12
22 015483 Centifugal Switch
23 018417 Isolation Ring
24 018412 Stator 53 (110V/60Hz)
25 015485 Isolation Paper
26 015487 Shim
28 015486 Bearing 6002
29 015488 Rotor (110V/60Hz)
30 015489 Bearing E 20
31 015485 Isolation Paper
32 033964 Complete Gear
33 015492 Drive Hub
34 015402 Spacer
35 015401 Drive Hub Plate
36 014760 Screw for Hub M8 x 20
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HANDLE
Schematic # Part # Description
1 015439 Screw
2 & 11 014193 Front & Rear Pistol Stock
3 015440 Adjusting Lever for Shaft
4 015441 Lever for Right Switch
5 014814 Screw Nut
6 015442 Lever for Water Supply
7 015443 Splint-Pin
8 015444 Spacer
9 015445 Lever for Left Switch
10 015446 Ball
10.1 018611 Spacer
12 015447 Washer
13 015448 Screw for Handle Housing
14 015449 Screw for Handle
15 015450 Screw for Cover
16 015451 Screw Nut
17 014194 Safety Switch
18 015452 Spring
19 015453 Screw
20 021641 Rod for Handle
21 015455 Pull Rod for Shaft Adjustment
22 014731 Locking Screw for Joint
23 015457 Screw Nut
24 021639 Joint
26 021638 Attachment for Joint
27 014831 Shim
28 015461 Spring
29 015462 Retention Pin
30 016922 Gear Rim
31 021642 Pivot Bracket
34 015467 Pin
35 015468 Screw for Retention Pin
36 032678 Handle, Complete #1-35
37 032680 Grip, Complete #1-18
38 032681 Joint, Complete #22-24; 26-28
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ELECTRICAL INSTALLATION
Schematic # Part # Description
1 021637 Switch Holder
3 015493 Fastening Screw
4 015514 Switch
5 018014 Screw for Fixed Link
6 018027 Screw for Cover
7 015496 Cable Clip
8 015497 Holding Device
9 015498 Protective Rubber Sleeve
10 014195 Cable + Connector Plug
11 015500 Cable Support
12 015499 Main Power Cord 15mm
13 018419 Screw Nut
14 033965 Spare Socket
15 015502 Socket
16 018332 Screw
17 021662 Socket Cover
18 015503 Starting Condensor 156MF
19 015504 Screw
20 015505 Operating Capacitor 31.5MF
21 033962 Socket Cover
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GEAR
Schematic # Part # Description
31 015507 Oil Seal Washer
32 033963 Top Cover
33 018422 O-Ring
34 018237 Washer
35 015489 Bearing E20
36 018424 Lay Shaft
37 018425 Bearing 16-004
38 018426 Bearing E15
39 015508 Gear Shaft
40 015509 Gear
41 018427 Gear Holder
42 018428 Bearing 16.001
43 018429 Planetary Box
44 015510 Oil Seal Washer
45 015511 Washer
46 018219 Grup Screw M4 x 10
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“New Style,” Green 390 Surface Prep Schematic
Vacuum
Schematic# Part# Description
1 SP014038 Tube with branch connection
2 SP014039 Extraction ring with brushes
3 SP015352 Branch connection
4 SP015353 Brushes
5 SP015354 Adapter
6 SP015355 Supporting cage
7 SP015356 Suction Case
8 106055 Paper Bags 10/pk
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STANDARD WARRANTY
SINCLAIR EQUIPMENT COMPANY’S tools are warranted to be free of defects in workmanship
and materials for a period of one year from the date of original purchase. Should any trouble develop
during this one year period, return the complete tool, freight prepaid, to SINCLAIR’S authorized
Service Center. If inspection shows the trouble is caused by defective workmanship or materials,
SINCLAIR EQUIPMENT COMPANY will repair, or, at its option, replace without charge.
x This warranty does not apply to malfunctions caused by damage, unreasonable use, faulty repairs
made by others, or failure to provide recommended maintenance.
x The warranty is void if the product is altered by the original consumer purchaser, or if it is used in
a manner not recommended by the manufacturer.
x The warranties do not cover consequential damages or transportation charges incurred with the
replacement or repair of SINCLAIR EQUIPMENT COMPANY products.
x Not responsible for lost job or down time.
In no event shall SINCLAIR be liable for any indirect, incidental, or consequential damages from the
sale or use of the product. This disclaimer applies both during and after the term of this warranty.
SINCLAIR EQUIPMENT COMPANY disclaims liability for any implied warranties, including
implied warranties of “merchantability” and “fitness for a specific purpose”, after the one year term of
this warranty.
This warranty gives you specific legal rights, and you may have other rights which vary from state to
state. Should you have any questions, contact SINCLAIR EQUIPMENT COMPANY at (530) 626-
9386.
To obtain warranty service, deliver or send the complete tool, prepaid, to SINCLAIR EQUIPMENT
COMPANY. Be sure to include the following information:
x Nature of failure;
x Name and address of distributor where tool was purchased;
x Application of tool when rendered defective; and
x Proof of purchase.
To obtain individual repair parts, contact SINCLAIR EQUIPMENT COMPANY with the following
information:
x Tool model number;
x Item part number; and
x Description of part.
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Notes
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